Racism is a term on which a great deal of discourse does and should turn in all realms of social work theory, practice, policy, and research. Because it is a concept heavily freighted with multiple and conflicting interpretations and used in a wide variety of ways, the idea and action of racism is not easy to teach or learn in a simple and straightforward manner. It is a term the meaning of which has been the subject of so much argument and mutation that its utility as a clear and reliable descriptor of a crucial form of ideology or behavior is less than certain. In this article, an analysis of the dispute over the proper definition of racism is undertaken, and an approach to teaching about the term is offered in an effort to provide both teachers and students with a clear, consistent, and useful understanding of this important and challenging phenomenon.